PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-23:27:50
G10     283.7          46.0               17.9 +/-    1.23      23.8 +/-    1.23  0.070 / 0.090
G15     49.0           37.5               16.0 +/-    1.07      24.3 +/-    1.07  0.070 / 0.090
G18     334.4          66.9               16.8 +/-    0.52      18.1 +/-    0.52  0.050 / 0.030
G20     65.0           23.6               16.0 +/-    0.95      32.3 +/-    0.95  0.050 / 0.040
G21     60.9           76.9               20.1 +/-    0.40      20.6 +/-    0.40  0.140 / 0.180
G24     108.6          22.1               20.5 +/-    1.32      42.8 +/-    1.32  0.110 / 0.180
G27     308.1          30.4               17.9 +/-    1.09      31.1 +/-    1.09  0.090 / 0.130
G29     167.2          13.4               25.1 +/-    2.15      64.8 +/-    2.15  0.070 / 0.140
G32     208.0          20.9               24.8 +/-    2.88      53.4 +/-    2.88  0.070 / 0.090